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Finding the Fourth Proportional to 583,665.40, 805,637.70 and 342,025.80

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Solution

The fourth proportional to 583,665.40, 805,637.70 and 342,025.80 is: 472,100.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,665.40 : 805,637.70 = 342,025.80 : x
  2. Step 2: Convert to fraction form
    583,665.40/805,637.70 = 342,025.80/x
  3. Step 3: Cross multiply
    583,665.40x = 805,637.70 × 342,025.80
  4. Step 4: Simplify right side
    583,665.40x = 275,548,878,852.66
  5. Step 5: Solve for x
    x = 275,548,878,852.66/583,665.40
  6. Step 6: Final answer
    x = 472,100.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.